Patents by Inventor Jun-ichiro Kido

Jun-ichiro Kido has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for pulping lignocellulosic material
    Patent number: 4473439
    Abstract: Lignocellulosic material is pulped with an alkaline sulfide cooking liquor which is characterized by containing a combination of a delignification-accelerating additive consisting of a quinone compound, hydroquinone compound, 9,10-diketohydroanthracene compound or 9,10-dihydroxyhydroanthracene compound, and a reducing additive consisting of a sulfite, hydrogen sulfite, thiosulfate or formate.
    Type: Grant
    Filed: August 23, 1982
    Date of Patent: September 25, 1984
    Assignee: Oji Paper Co., Ltd.
    Inventors: Isao Wada, Jun-Ichiro Kido, Wazuo Koido
  • Process for pulping lignocellulosic material with an alkaline sulfide cooking liquor containing an accelerating additive and reducing assistant
    Patent number: 4363700
    Abstract: Lignocellulosic material is pulped with an alkaline sulfide cooking liquor which is characterized by containing a combination of a delignification-accelerating additive consisting of a quinone compound, hydroquinone compound, 9,10-diketohydroanthracene compound or 9,10-dihydroxyhydroanthracene compound, and a reducing additive consisting of a sulfite, hydrogen sulfite, thiosulfate or formate.
    Type: Grant
    Filed: March 13, 1980
    Date of Patent: December 14, 1982
    Assignee: Oji Paper Co., Ltd.
    Inventors: Isao Wada, Jun-ichiro Kido, Kazuo Koido